Amendments to planning permission dated 19 October 2019 (RN: 22/06005/FULL) for alterations to front boundary wall including installation of metal entrance gate to front elevation; namely change of front driveway material surfacing from Addagrip permeable resin bound surfacing to mid and silver grey granite sett paving laid with permeable grout, permeable bedding layers and supporting on cell web eco grid to protect tree roots of T8, and to alter the alignment of the existing low planter.

Amendments to planning permission dated 30 October 2019 (RN:19/05103/FULL) for alterations to New Palace Yard, changes to access and other arrangements and changes to railings and gates within the yard. NAMELY, redesign of the proposed railings, omission of the search and screen facility on the northern boundary and minor relocation of some of the historic lampstands.

Amendments to planning permission dated 20 December 2022 (RN: 22/05746/FULL) for variation of Condition 1 of planning permission dated 08 September 2014 (RN:14/03923/FULL) for the excavation to create basement extension and lower pavement vaults; removal of existing extensions and replace with extensions at rear lower ground to third floor level including roof terrace at rear first floor level; erection of fourth floor extension in mansard style to rear and open up blind windows to front; installation of plant within mansard structure; new landscaping to garden and replace boundary wall with 16 Wilton Crescent; namely, alterations to the size and position of the new rooflights and access hatch at roof level, opening up of a blind window at rear third floor level and alterations to the glazing on the front elevation. Namely, internal alterations to the staircase at Lower Ground, Ground and First Floor.

Amendments to planning permission dated 26 July 2019 (RN:19/03428/FULL) for the demolition of existing dwellinghouse and erection of new four storey dwellinghouse (Class C3) comprising a basement floor extending under part of the front and rear gardens, ground and two upper floors, and associated external alterations, including replacement of front boundary wall. Namely, minor repositioning of windows; repositioning of the side entrance door and change to style of door; Dormer window sizes reduced; Rear ground floor doors combined with windows and brick piers removed; Design of front portico simplified to be more in keeping with the house; Parapet detail amended; Alterations to chimney, height and capping; Reduction in size of rooflights to ground floor single storey rooms; Splitting up of the rooftop courtyard glazing; Alteration to basement lightwell configuration; Glazed metal door and security gates added and lowering of basement window cills; 5mm increase in height to a side extension; change in eaves height to main roof.

Amendments to planning permission dated 28th July 2020 (RN:19/07659/COFUL) for Development of existing western car park for the erection of a five storey block providing nineteen Class C3 residential units, demolition of existing storage sheds to west of site to provide four three storey Class C3 dwellings, amenity space, refuse storage, cycle parking, and estate works including the realignment of Droop Street; reconfiguration of the existing central car park, and erection of a replacement boundary wall to the existing nursery. Amendments to planning permission dated 28th July 2020 (RN:19/07659/COFUL) for Development of existing western car park for the erection of a five storey block providing nineteen Class C3 residential units, demolition of existing storage sheds to west of site to provide four three storey Class C3 dwellings, amenity space, refuse storage, cycle parking, and estate works including the realignment of Droop Street; reconfiguration of the existing central car park, and erection of a replacement boundary wall to the existing nursery. Namely, refuse store door on west elevation at ground floor to become louvred door; Air bricks to be added on all elevations; Four gates removed from landscaping design; Replacement of one of first floor windows in east elevation of townhouses with blind window; Alterations to layout of roof photovoltaic panels; External door added to the East Elevation to cycle store; and window omitted to West elevation at ground floor.

Amendments to planning permission dated 30th September 2020 (RN: 19/09329/COFUL) for demolition of existing structures including storage sheds and redevelopment of existing car park to provide two blocks of three and five storeys providing a total of 21 x Use Class C3 (residential) units and other associated works, including the provision of storage units, car and cycle parking, landscaping, access gates and boundary treatment. Namely, the installation of air bricks, raising of window transoms to all windows, reduction in size of mansard rooflights, raising of parapets around the top of the apartment building by 200mm, introduction of mechanical opening to windows, reduction in number of storage units to allow an increase in size, replacement of low level wall with railings at ground floor level at the rear of the block of flats, reconstruction of the vehicle crossover and amendment to the approved tenure mix from 8 x intermediate units to 8 x social rented units.

Amendments to planning permission dated 9 September 2022 (RN: 22/04994/FULL) for: Erection of infill extensions to the front and rear at lower ground floor level; addition of a small glazed extension and new terrace area to the rear at ground floor level; and trellis to the boundary wall. Namely, amendments to design of front lightwell glazing.

Amendments to planning permission dated 22nd September 2021 (RN:20/07605/FULL) for Variation of condition 1 of planning permission dated 28 February 2020 (RN: 19/00529) for the: Redevelopment of Pegasus House and Nuffield House including demolition behind a retained facade (west, south and east) of Nuffield House and replacement building comprising 2 level basement, ground, mezzanine and first to seventh floor and demolition and replacement of Pegasus House comprising 2 level basement, ground, mezzanine and first to fifth floors; amalgamation of the two buildings to provide new office (Class B1), retail (Class A1), restaurant (Class A3), flexible office / retail (Class B1 / A1), and residential accommodation (Class C3); and other associated works. Namely, at roof level to retain the existing boundary wall between the site and the neighbouring property at 36 Sackville Street, to adapt the head of the secondary staircase and the relocation of the generator flue to the centre of the staircase, and to install a lead and stone cap infill where a modest gap will be created between the site and 36 Sackville Street.

Amendments to planning permission dated 7th June 2016 (RN: 16/01825/FULL) for, 'Installation of a rooflight over the central rear light well at first floor level and creation of terrace at first floor level, installation of rear access door at first floor level and creation of roof terrace at roof level including railings all in connection with the use of the building as offices (Class B1)'; Namely, to enable the approved first floor roof terrace to be enlarged, a walk on roof light to be incorporated into the floor of the extended roof terrace, existing black metal railing along the boundary between No.22 and No.23 Gilbert Street at the rear first floor level is proposed to be continued for the length of the terrace and a timber trellis added at the eastern end and existing window is proposed to be replaced with a door to provide access to the extended terrace.

Amendments to planning permission dated 24th June 2021 (RN:20/07236/FULL) for Use of the existing buildings to create two dwelling houses with extensions including demolition and rebuilding of the mews building and excavation to extend the existing basement, installation of air conditioning units on the roof of 1 Upper Belgrave Street and vaults of 1 and 2 Upper Belgrave Street, and associated alterations. (Site includes 1 Groom Place). Namely, internal reconfiguration within the new build element to the rear of number 1 Upper Belgrave Street and the structure of the pool to be extended to the rear boundary and widened to allow for a larger swimming pool with subterranean service void.